Regolith-hosted rare earth element (REE) deposits, also called ion-adsorption or weathered
crust elution-deposited REE deposits are distributed over Jiangxi, Guangdong, Fujian …

Recent years have seen a considerable upsurge in publications concerning the surface
structure and chemistry of materials with biological or biomedical applications. Within the …

Ion adsorption-type rare earth element (REE) deposits are the predominant source of heavy
REE (HREEs) and yttrium in the world. Economic examples of the deposits are confined …

The depletion of calcium in forest ecosystems of the northeastern USA,, is thought to be a
consequence of acidic deposition and to be at present restricting the recovery of forest and …

The speciation of U (VI) sorbed to synthetic hydroxyapatite was investigated using a
combination of U LIII-edge XAS, synchrotron XRD, batch uptake measurements, and SEM …

A nanocomposite of magnetic hydroxyapatite was synthesized and tested as an adsorbent
for the removal of copper (Cu (II)) and nickel (Ni (II)) from aqueous solution. The adsorbent …

The dissolution rate of apatite was determined in batch reactors in organic acid solutions
and in microbial cultures. Inoculum for the cultures was from biotite plus apatite crystals from …

The use of natural adsorbent such as phosphate rock to replace expensive imported
synthetic adsorbent is particularly appropriate for develo** countries such as Tunisia. In …

Toxic metals contamination of waters, soils and sediments can seriously affect plants,
animals and human being. The bioavailability of metal ions can be reduced trap** them in …

The environmental risk from soil lead (Pb) is related to its bioavailability. Soil Pb
bioavailability depends on the solubility of Pb solid phases and other site‐specific soil …